it really does need an examination to assess the issue, but it is possible that a late serum, or fluid collection, can be the issue. It will lead to some swelling and firmness and can settle at times and in others persist. it really does need medical review to exclude an issue that does need treatment
Thank you for your question. No online reviewer can make a diagnosis or treatment recommendation without a complete medical history and examination. I would recommend starting with a with a face to face consult with a Board Certified Plastic Surgeon who has experience in breast surgery. During your visit your surgeon should be evaluating your health to determine if you are a good surgical candidate and examining your tissues to get a sense of what is occurring in your case. Only with a hands on exam can this be determined. During the consult you and the surgeon should be understanding of the goals and realistic outcomes of your choices. Good luck.